ABYC Standards on new boats

[chala]

Originally Posted by boatpoker

You are in dire need of some electrical training. You have too many misconceptions and misunderstanding for me to correct on this forum.
May I suggest one of the ABYC courses.

Good one.

And you do that for a living?

Does not say much for the ABYC courses.

Got to be some blizzard, fog, pollution down there.

[jeepbluetj]

Wow. just wow. How in the world does 120v vs 220v change the amount of greenhouse gas emitted? E=IR and P=IE. P is P. Burning coal, splitting atoms, spinning an alternator, or gathering sunlight - power is power.

[chala]

Wow.

Just try P = (I * I)* R and do not get too much a fix on the amount of greenhouse gas emitted but on the amount of heat produced.

[TeddyDiver]

Originally Posted by chala

Wow.

Just try P = (I * I)* R and do not get too much a fix on the amount of greenhouse gas emitted but on the amount of heat produced.

Time to update boat DC up to 24v?

[svlamorocha]

Originally Posted by Stu Jackson

I'm not sure about this higher current comment. It appears that for the same current, the wire has to be bigger for 120V.

That is incorrect in most boats. This is because in most boats under 50ft the AC wire gauge is determined by ampacity, not voltage drop. The relationship between ampacity and gauge is independent of voltage.

Another story is that for a given *power* requirement, 120V will require higher current than 240V.



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[chala]

Originally Posted by TeddyDiver

Time to update boat DC up to 24v?

Good move.
Less weight, you will be able to carry more ice cream.


The value for Electric power transmission and distribution losses (kWh) in Australia was 13,313,000,000 as of 2011 (5.27%). As the graph below shows, over the past 51 years this indicator reached a maximum value of 18,151,000,000 in 2001 (8.09%) and a minimum value of 2,646,000,000 in 1961.(11.48%)
Australia - Electric power transmission and distribution losses
Definition: Electric power transmission and distribution losses include losses in transmission between sources of supply and points of distribution and in the distribution to consumers, including pilferage.

Rank……Country 2011…………………….Value kWh Year 2011……….Year 2006…………..Year 2012
1……………China (5.73%)…………………….270,070,000,000.00…………….(6.50%)……… ……….(5.80%)
2…………… United States (6.0%)………….259,528,000,000.00……………(6.20%)………………..( 6.30%) UP
3…………… India (20.04%)……………………222,412,000,000.00…………….(23.7%) ………..…….(17.0%)
4…………… Russia (9.97%)…………………..105,002,000,000.00…………….(10.8%)……… ……….(9.90%)
5…………… Brazil (16.26%)…………………...87,524,000,000.00…………….(16.8%)…… ………….(17.1%) UP
6……………Japan (4.62%)………………………48,166,000,000.00……………(6.50%)…………… …..(4.40%)
7…………… Mexico…………………………………..45,602,000,000.00
8…………… Iran……………………………………….34,906,000,000.00
9…………… Canada (7.20%)…………………..34,700,000,000.00…………..(6.60%)………. ..…….(7.10%) UP
11………….France (6.0%)……………………..29,052,000,000.00……….….(5.60%)………… ……..(6.70%) UP
12………….United Kingdom (7.50%)….…27,862,000,000.00……….….(7.00%)………………..(7 .90%) UP
26………….Australia (5.27%)………………..13,313,000,000.00…………..(6.70%)…………… …..(5.10%)


Electric power transmission and distribution losses (% of output) | Data | Graph

China - Electric power transmission and distribution losses (kWh) - Country Comparison